Why no sound when cast to Microsoft Wireless Display Adapter[Resolved]

I've created several slide shows successfully (without sound/music) and am able to project the slide show to a different display other than my computer using a Microsoft Wireless Display Adapter. Recently, I added music to a project and then tried to present it on a different screen other than my computer using a MIDA, but no sound, only video came through. I do get the sound when I play it through my computer, just not when I try casting in through the MIDA. Is there a compatibility issue? I do get computer sounds, ie. itunes music, computer tones, etc. through the MIDA, I just don't get sound from my project. Any suggestions? Thanks